In order to make the revision process clear, I introduce a confident index, "0" means nobody except me has reviewed the text. I please the reviewers to increment the counter to prove the validity of the tutorials.

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You can get help on #phonon on irc.freenode.org.

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See [[Development/Tutorials/Phonon/Introduction/Python]] for the same example in Python.

By getting involved with Phonon, you can choose between three different main tasks.

By getting involved with Phonon, you can choose between three different main tasks.

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* '''Using the Phonon API''', which allows you to develop your own multimedia application. In fact any application which needs sound can take benefits from the phonon API. In the tutorials showing the API we will learn how to set up the development environment with kdevelop 3.4.

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* '''Using the Phonon API''', which allows you to develop your own multimedia application. '''This is discussed here.'''

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* '''Hacking the Phonon library'''.

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* '''Hacking the Phonon library''', (try to develop more this topic).

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* '''Writing Phonon backend''', this consists in writing interfaces that allows Phonon to use different sound/video engine. This usually requires good skills and knowledge of the engine you interface with.

* '''Writing Phonon backend''', this consists in writing interfaces that allows Phonon to use different sound/video engine. This usually requires good skills and knowledge of the engine you interface with.

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Beginners will probably be more interested by the first task.

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=Abstract=

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The following example lets you select a music file and plays it. To change the sound device that is used by default, use the command <tt>systemsettings</tt>.

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= Using the phonon API =

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The following example is taken from http://www.englishbreakfastnetwork.org/apidocs/apidox-kde-4.0/kdelibs-apidocs/phonon/html/index.html. It lets you choose a multimedia file and tries to play it. To change the sound device that is used by default, use the command <tt>systemsettings</tt>.

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== CMakeLists.txt ==

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You need a file CMakeLists.txt to compile the software later:

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CMakeLists.txt

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project (tutorial2)

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find_package(KDE4 REQUIRED)

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include (KDE4Defaults)

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include_directories(${KDE4_INCLUDES})

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set(tutorial1_SRCS tutorial2.cpp)

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kde4_add_executable(tutorial2 ${tutorial1_SRCS})

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target_link_libraries(tutorial2 ${KDE4_KDEUI_LIBS} phonon)

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install(TARGETS tutorial2 ${INSTALL_TARGETS_DEFAULT_ARGS})

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== tutorial2.cpp ==

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<pre>

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/* This file is part of the KDE project

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Copyright (C) 2007 Matthias Kretz <kretz@kde.org>

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adapted 2008 by Thorsten Staerk

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Permission to use, copy, modify, and distribute this software

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and its documentation for any purpose and without fee is hereby

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granted, provided that the above copyright notice appear in all

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copies and that both that the copyright notice and this

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permission notice and warranty disclaimer appear in supporting

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documentation, and that the name of the author not be used in

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advertising or publicity pertaining to distribution of the

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software without specific, written prior permission.

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The author disclaim all warranties with regard to this

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software, including all implied warranties of merchantability

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and fitness. In no event shall the author be liable for any

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special, indirect or consequential damages or any damages

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whatsoever resulting from loss of use, data or profits, whether

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in an action of contract, negligence or other tortious action,

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arising out of or in connection with the use or performance of

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this software.

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*/

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=The Code=

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All the code we need will be in one file, <tt>main.cpp</tt>. Create that file with the code below: